TIM BERNERS-LEE: Father of Web says tech giants may have to be split up.

“What naturally happens is you end up with one company dominating the field so through history there is no alternative to really coming in and breaking things up,” Berners-Lee, 63, said in an interview. “There is a danger of concentration.”

But he urged caution too, saying the speed of innovation in both technology and tastes could ultimately cut some of the biggest technology companies down to size.

“Before breaking them up, we should see whether they are not just disrupted by a small player beating them out of the market, but by the market shifting, by the interest going somewhere else,” Berners-Lee said.

Apple, Microsoft, Amazon, Google and Facebook have a combined market capitalization of $3.7 trillion, equal to Germany’s gross domestic product last year.

That’s an incredible figure.